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Calculate the vapor pressure of water, in torr, above a solution prepared by dissolving 62.60 g of ZnCl2 in 429.0 g of water at 328.0 K. The vapor pressure of pure water at 328.0 K is 118.0 torr.
a) The vapor pressure above the solution is 145.0 torr.
b) The vapor pressure above the solution is 122.7 torr.
c) The vapor pressure above the solution is 89.24 torr.
d) The vapor pressure above the solution is 111.5 torr.
e) The vapor pressure above the solution is 66.93 torr.
What mass of carbon dioxide (in kg) is produced upon the complete combustion of a typical tank of propane containi 18.9 L. The density of the propane is 0.621 g/ mL Hint: begin by writing a balanced rquation for the combustion reaction.
Calculate the Z for the fourth ionization of Ti when it requires 425.6 kJ of energy to ionize 0.185 moles of Ti^3+ to Ti^4+ ( The electron being removed is in the outermost valence orbital of Ti^3+ ground state, therefore n = 3)
What are your actual experimental ratios? Give possible reasons for any observed variations from these ratios.
mixed 14.5 mL of a .500 M sodium flouride solution with 15.6 mL of a .750 M hydroflouric acid solution the measured Ph was 3.24. Calculate the pKa.
If a molecule is more affected by London Dispersion forces that means it will have a higher melting point. if big molecules are less affected by dipole-dipole attractions, they will have a higher melting point. are these statements true?
Determine the equilibrium concentrations - what are the new equilibrium concentrations of all species.
Consider the open ammonia-water system with a partial pressure of ammonia pNH3 = 10?5 atm. What is the equilibrium pH and composition of this solution?
calculated the concentration of B-Carotene in your 2.00mL sample to be 2.082x10-6 M, how many grams of B-Carotene are in your sample?
consider the following mixtures. in each case either calculate the pH if the resulting solution is a buffer solution or state why the solution does
exists for each of these chemical reaction types above and why might it be of importance to healthcare professionals?
0.90 g of hydrogen chloride (HCl) is dissolved in water to make 2.5 L of solution. What is the pH of the resulting hydrochloric acid solution?
Write the equation for the reaction that occurs when Zn is placed in a 1M HCl solution, and determine the net EMF for the reaction.
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